KR200354108Y1 - Flow Switching Valve - Google Patents

Abstract

The present invention is a distribution valve for selectively dispensing liquids such as water into a plurality of passages, and is provided with a switching hole of a switching plate and a switching plate rotating at constant speed by a stepping motor which rotates forward or backward by a predetermined angle according to an electrical signal. The flow-through valve is selectively opened and the flow-through valve is discharged to the outlet through the outflow hole, and the outflow hole closed by the contact surface between the change plate and the toilet seat made by injection molding or processing is closed. And the outflow hole is opened in accordance with the opening, the flow path is opened, thereby improving the closing performance of the contact surface between the distribution plate and the toilet seat can minimize the flow rate of fluid leaked through the closed outlet hole and the contact surface between the switching plate and the toilet seat It is possible to improve productivity dramatically because there is no need for additional machining to improve flatness and roughness The.

Description

Flow Switching Valve {Flow Switching Valve}

The present invention relates to a device for distributing fluid into a plurality of flow paths, and has been proposed a bidet flow path switching device (hereinafter referred to as a dispensing device), which is conventionally filed in Utility Model Application No. 20001-32745. Let's take a look at.

1 is a perspective view of a conventional dispensing apparatus, FIG. 2 is a sectional view of a conventional dispensing apparatus, FIG. 3 is a view showing a rotating body in a conventional dispensing apparatus, and FIG. 4 (a) (b) is a conventional dispensing apparatus. Top view and bottom view of the.

The configuration of the conventional distribution device, the rotating shaft of the stepping motor 100 is coupled to the lower side, the discharge plate 235 is formed in the disc-shaped support plate 230 which is supported by the spring 220 is made to rotate A rotating body 200; It is assembled in close contact with the upper surface of the control plate 230 and formed symmetrically on the vertical axis while gradually forming a circle from one side, the width is gradually widened, the other end is formed with a pair of main holes 310 penetrating upwards, The distribution plate 300 having the auxiliary hole 310 penetrating up and down on the vertical axis on the opposite side where the main hole is formed, and the supply part 410 of the washing water is provided at one side, and the main hole 310 and the auxiliary hole ( It consists of a housing 400 having a discharge port 420 to be supplied to separate the washing water discharged from 320, the control plate 230 is inserted into the rotating body 200 is moved up and down .

The rotor 200 is divided into a shaft 210, a spring 220, and a control plate 230, and a rotating shaft of the stepping motor is fixed to the lower side of the shaft 210.

In addition, a protrusion pillar 211 to which the adjustment plate 230 is fastened is formed from the center of the flange surface 212, and the lower end of the spring is positioned on the flange surface 212.

The other end of the spring 220 is in contact with the lower surface of the control plate 230 to generate a force to press upward.

The lower part of the protruding pillar 211 is provided with another protruding stopper 213, which allows the control plate 230 to rotate integrally with the shaft 210 when the control plate 230 is coupled, The stopper groove 236a is formed on the lower surface of the adjusting plate 230.

The control plate 230 is inserted into the protrusion pillar 211 and restrained so that a predetermined displacement occurs up and down. For this purpose, a protrusion 214 for fastening is provided at an upper end of the protrusion pillar 211.

The control plate 230 is a flat plate-like member, the central portion of the lower side is provided with a cylindrical hollow shaft 236 in which the stopper groove 236a is formed and a discharge groove recessed in a wedge shape in one place of the plate portion. 235 is formed.

As described above, in the conventional flow path switching valve, the control plate 230 and the distribution plate 300 are supported by the spring 220 so that the upper surface of the control plate 230 and the lower surface of the distribution plate 300 come into close contact with each other. The flow path is formed by the main hole or the auxiliary hole that is matched with the discharge groove 235 formed in the control plate, the fluid is discharged, the main hole or auxiliary hole that is not matched with the discharge groove 235 is the upper side of the control plate 230 The flow path is closed because it is pressurized by the air.

Therefore, in order to improve the sealing property of the upper side of the control plate 230 and the lower side of the distribution plate 300 by polishing by a separate machining to improve the flatness and surface roughness and the control plate 230 is also the distribution plate Since the sealing performance is improved when the 300 is strongly pressurized, a spring with a relatively large pressing force of the spring is applied.

As described above, since the adjusting plate and the distribution plate are machined such as polishing, the production cost is increased, while the excessive application pressure of the spring is applied between the control plate and the distribution plate, so that a frictional force proportional to the applied pressure is provided between the control plate and the distribution plate. Since the rotating torque of the stepping motor applied to rotate the throttle becomes excessive, it is necessary to apply a stepping motor that consumes relatively high power, or a stepping motor with a reduction gear as a driving source, which is a factor of cost increase and also due to excessive frictional force. There is a problem in that the wear life between the throttle or distribution plate is fast, so the life is short.

The present invention improves these problems by effectively rotating the throttle plate with a relatively low torque stepping motor, improving the sealing performance of the fluid by surface sealing without machining the throttle plate and the distribution plate. The purpose is to reduce.

1 is a cross-sectional view of a conventional flow path switching valve,

Figure 2 is an exploded perspective view showing the main part of the conventional flow path switching valve,

3 is an external perspective view of the flow path switching valve according to the present invention,

4 is a cross-sectional view of the flow path switching valve according to the present invention,

Figure 5 is a detailed cross-sectional view of the main part of the flow path switching valve according to the present invention,

Figure 6 is an exploded perspective view of the deformable portion of the flow path switching valve according to the present invention.

* Explanation of symbols for main parts of drawings *

80; Switching feces 81; Center through

84; Pressurized through 83; Section 1 Announcement

102; Second through hole 90; Toilet seat

100; Sealing plate 85; Guide turning

103; Guide groove 92; Airtight rib

91a, 91b, 91c, 91d; Outlet holes 92a, 92b, 92c, 92d; Communicator

The present invention is designed to achieve this purpose and will be described in detail with reference to the accompanying drawings as an example. First, Figure 4 is a cross-sectional view showing the entire cross-section of the present invention is provided with a cylindrical magnet rotor 150 formed of a plurality of magnetic poles in a cylindrical valve housing 60 provided with a fluid inlet 10, the magnet rotor 150 The stator 50 and the coil 40 are inserted outside the valve housing 60 so that the positive and reverse rotational magnetic fields can be applied by the step control signal.

Therefore, when the step control signal is applied to the coil 40, the magnet rotor is rotated by applying a rotating magnetic field to the magnet rotor, and the rotational force is switched through the rotor support 20 provided in the magnet rotor 150. ) To transfer the fluid.

Therefore, the fluid introduced through the fluid inlet 10 of the valve is a rotor support 20 formed in a cylindrical shape on the inside of the magnet rotor 150 installed in the valve housing 140 and a fixed rib thinly connected up and down the inside of the magnet rotor. It is introduced into the changeover valve between 151.

The switching edge 80 is a disk-shaped cylindrical shaft support pillar is formed on the upper side and a central through-hole is formed so that the shaft 160 passes in the center, a plurality of guide projections on the outer periphery of the lower side of the disk ( 85) is formed.

In addition, the sealing plate 100 is installed and coupled to the switching plate 87 of the switching valve 80, a plurality of outlet holes 91 and the communication hole 92 at the lower end of the sealing plate (100). The toilet seat 90 is provided with a plurality of communication tubes 93 having a cylindrical shape surrounding the outer periphery of the communication hole 92, and a plurality of inserts formed at an upper portion of the valve body 170 installed at the lower end of the toilet seat. A plurality of flow paths are formed by being pressed into the ball 171.

5 and 6 are detailed cross-sectional views and operating principles of the main parts of the flow path switching valve according to the present invention, respectively. The cylindrical magnet rotor 150 rotates by a predetermined angle in the forward and reverse directions by a step signal. And, while supporting the magnet rotor, the central hole is formed so that the shaft 160 penetrates in the axial direction in the center portion, and a fixed rib 152 having a plurality of fixed ribs 152 is provided therein.

The lower end of the fixing rib 152 is provided with a pressing spring 70, and the spring 70 serves to press the switching edge 80 in the downward direction to press toward the toilet seat. The switching edge 80 is a disk-shaped structure in the center of the cylindrical boss of a certain height is formed in the center and the central through-hole 81 through which the shaft 160 is passed is formed in the center of the lower disk portion The first switching through-hole 83 through which the fluid passes at a predetermined distance is formed in an arc shape. In addition, a plurality of pressurized through holes 84 having a small diameter are formed at the same distance from the first switch through holes 83 and the center through holes 81, and the press through holes 84 and the first switch through holes 83 are provided. The spring guide 82 protrudes in the shape of an arc around it. In addition, a plurality of guide protrusions are formed along the outer circumferential surface of the switching plate 87 on the lower side of the switching plate 87 of the switching valve, and a pair of hooks 86 are formed in the upper direction on the outer circumferential surface of the switching plate to fix the ribs. (152) The switching edge is formed in the fixed protrusion 151 protruding at a predetermined distance on the lower end and the switching edge 80 is rotated at the same speed as the magnet rotor 150, while the switching edge is moved in the axial direction with the magnet rotor To be possible.

The lower end of the switching valve 80 is provided with a thin disk-shaped sealing plate 100, the guide plate 103 is formed in the sealing plate along the outer circumferential surface of the guide projection formed in the lower portion of the switching valve (80) The second switching through hole having the same size as the first switching through hole is formed at the same position as that of the first switching through hole 83 formed in the switching edge 80, and the center is loosely fitted. The through-hole is formed so that the shaft 160 can pass through.

Therefore, the sealing plate 100 is installed in close contact with the lower side of the switching valve 80, the guide grooves formed at intervals of a plurality of intervals on the outer peripheral surface of the sealing plate is engaged with the guide projection 85 formed on the switching valve to rotate at constant speed. It is moved, and is pushed toward the toilet seat 90 with the switching edge 80 by the pressure spring (70).

The toilet seat 90 has a disk-shaped structure, which has a plurality of outlet holes 91 and communication holes 92 formed in a plurality of upper and lower portions, respectively, and protrudes at a predetermined height in the outer circumference of the outlet hole 91 to form the same plane. An airtight rib is formed. In addition, the outflow hole 91 is formed on the same diameter as the circle formed by the rotation of the first switching hole 83, the outflow hole formed in the toilet seat 90 as the first switching hole and the first switching hole is rotated The positions 91a, 91b, 91c, and 91d are sequentially positioned on the same plane.

Therefore, when the first switching through hole (83) and the second switching through hole (102) is located on the outlet hole (91a), the fluid is the first switching through hole (83), the second switching through hole (102) and the outlet (91a) Passed sequentially and discharged to the outlet (172a) through the communication hole (92a) and the insertion hole (171a) formed in the upper end of the valve body. At this time, the outlet holes (91b), (91c) and (91d) is sealed by each of the sealing ribs 92 formed in the upper portion and the sealing plate 100 in close contact with the upper portion of the sealing ribs, the closed outlet hole (91b) Fluid pressure acts on the sealing plate 100 through a plurality of pressurized through holes 84 formed at the upper portions of the upper and lower surfaces 91c and 91d, respectively, and the sealing ribs 92 corresponding to the sealed outflow holes 91. Pressure in proportion to the pressing force and the fluid pressure by the pressure spring acts on the surface of the can significantly improve the sealing effect.

The sealing plate 100 is a thin film, a hard, elastic material having a normal film, the thickness and hardness so that the shape of the sealing plate is not deformed beyond the elastic limit when the fluid pressure is applied to the closed outflow hole , The elastic modulus, etc. should be appropriately selected and selected, and since friction with the sealing rib formed on the toilet seat is made, the rotational force is applied to the plurality of guide grooves 103 in abrasion resistance and rotation direction, so that the guide grooves are not deformed. ) And guide protrusions 85 will have to be determined,

The encapsulation plate 100 is a plate- or roll-like film (FILM) in a press die mass production can be mass-produced, so that not only can significantly reduce the manufacturing cost, but also between the switching valve 80 and the toilet seat 90 It is a feature of the present invention to have excellent fluid sealing performance even without a separate planar polishing operation on the sealing surface.

As illustrated in detail B of FIG. 5, the sealing plate 100 illustrates a case in which the outlet hole 91 is closed, and the curvature is formed on the lower side of the switching valve 80 and the upper surface of the sealing rib 92. It is formed, the fluid pressure (arrow) acts on the top surface of the sealing plate 100 through the pressure through-hole 84 formed in the switching plate 87 of the switching valve 80, the sealing rib 92 Since it adheres along the upper surface, excellent sealing properties can be achieved without a separate planar processing.

It is applied to a valve that selectively distributes and switches fluid to a plurality of outlets through a switching hole formed at the switching edge by rotating the disc-shaped switching valve forward and backward at a predetermined angle, without performing planar grinding work between the switching valve and the toilet seat. Since the rotational force for rotating the changeover valve takes a relatively low torque while minimizing leakage to the closed outlet side, it is possible to reduce the cost of the plane processing cost of the part and the miniaturization of the driving stepping motor.

Claims (3)

A disk-shaped switching edge 80 having one first switching through hole 83 and a plurality of pressurized through holes 84; A thin plate-shaped sealing plate 100 in close contact with the bottom of the switching valve and having a second switching through hole 102 and having a plurality of guide grooves 103 formed on an outer circumference thereof; Closely installed on the bottom of the sealing plate flow path switching valve, characterized in that consisting of a toilet seat 90 formed with a plurality of outflow holes. The method of claim 1, A plurality of guide protrusions 85 are rotated in engagement with the guide groove 103 formed on the outer peripheral portion of the sealing plate 100, the outer peripheral portion of the lower surface of the switching valve 80, the first switching hole and the second switching hole is the same Flow path switching valve, characterized in that installed in the same position as the shape The method of claim 1, A flow path switching valve, characterized in that the sealing rib 92 of a predetermined width and a predetermined height is formed around the outlet (91) formed in the toilet seat (90).